1818789338 has 8 divisors (see below), whose sum is σ = 2740418688. Its totient is φ = 905316444.

The previous prime is 1818789311. The next prime is 1818789341. The reversal of 1818789338 is 8339878181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2038556 + ... + 2039447.

It is an arithmetic number, because the mean of its divisors is an integer number (342552336).

Almost surely, 2^1818789338 is an apocalyptic number.

1818789338 is a deficient number, since it is larger than the sum of its proper divisors (921629350).

1818789338 is a wasteful number, since it uses less digits than its factorization.

1818789338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078228.

The product of its digits is 2322432, while the sum is 56.

The square root of 1818789338 is about 42647.2664774661. The cubic root of 1818789338 is about 1220.6583694541.

The spelling of 1818789338 in words is "one billion, eight hundred eighteen million, seven hundred eighty-nine thousand, three hundred thirty-eight".